Today’s invention is a novel bikestand.
This takes the form of a larger than usual mudguard (on front or rear wheel).
When you want to park the bike, unclip the mudguard, fold out the two semicircular side panels and lock them in position, so that they act as supports for the inverted guard on the ground.
You can then place the rear bike wheel into the secure slot formed and use a conventional U-bolt to lock it vertically in place through the hole provided in the stand.